Improvement in paper-drying machines



TAYLOR & BRIGHTMAN.

Palpfar Drying Machine.

Patented June 23. y1863.

l Nik l 'e N IN i l@ l Pw Q' l 1 g I- I- .R N l mhagrapher, washington. D. C,

ll'rairii STATESI N. W.`TAYLOR AND J. W. BRIGHTMAN, OF CLEVELAND, OHIO.

IMPROVEMENT IN PAPER-DRYING MACHINES.

Specication forming part of Letters Patent No, 38,993, datedJune 23, 1863.

To all whom it may concern:

Be it known that we, N. WV. TAYLOR and J. W. BRIGHTMAN, of Cleveland, in thecounty of Cuyahoga and State of Ohio, have invented a new and Improved Paper-Drying Machine, being an improvement on the patent granted to us on the 29th day of April, 1862; and we do hereby declare that the following is a full and complete description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this speciiication, in which- Figure 1 is a top view. Fig. 2 is a side view. Fig. 3 is a view of the `opposite side from Fig. 2, with the sliding doors partly broken out to represent the inside. Fig. 4 is an end view. Fig. 5 is a longitudinal vertical section in the direction of the line x x in Fig. l. Fig. 6 is a transverse vert-ical section in the direction of the line y y in Fig. 1.

Like letters 'of reference indicate the same parts in the several views. l

In the several drawings, A represents th frame of the drier, with doors a a, Figs. 4 and 5, at. each end. Also, one s ide of the drier consists oftwo sliding doors, b b', Figs. 3 and 6. The inside of the drier is separated into chambers B C D E F by partitions or plates G, which are made so as to form longitudinal parallel opcnin gs through the center, as represented at d, Figs. 1, 5, and 6. These openings can b e graduated to suit the width of the paper passing through the drier by means of two horizontal pieces, h, placed on each partition, forming sliding parallels, having a rod, I, passing through the center, with arms or levers t' 'i connecting the rod and the pieces h h, Fig. 1. The rods extend out through the ends of the drier, and as they are moved in, the pieces l1. h approach each other, narrowin g the openings d to any desired width. At alternate ends of the partitionsvare rollers H 1 J K, over which the paper is carried from one chamber to another, the rollers JM and N conveying' it in and out of the drier. The

paper is guided and carried through the cham` bers by passing' over and under a number of small rollers, m and a, the rollers m being elevated above the rollers n, as shown in Fig. 5. The journals of these rollers at one end are supported and turn in arms d', Fig. 3, secured to the longitudinal partitions G. At the other end they pass through the side of the drier, to

which are secured the pulleys l. (Seen in Figs. 1, 2, and 6.) Over these pulleys passes an end'- less belt, as represented, by means of which they are operated. It is designed to put the driving-belt on the pulley E', on the shaft e of which there is a small gear, c, that works in the gear-wheel F. This gear-wheel revolves two conical-shaped pulleys, j' and f connected by the belt h', (seen in Fig. 4,) the pulley f being on the shaft of the gear-wheel F. By adjusting the belt on the conical pulleys f f the velocity of the rollers can be increased or diminishedto any desired rapidity. The pulley l', Fig. 2, is on the shaft of the conical pulley f', over which passes the belt that connects and operates the pulleys l on the ends of the rollers, the belt moving in the direction of the arrows in Fig. 2.

L represents a longitudinal box or chamber underneath the drier, tapering at the top to correspond with the size of thevopenings d in the partitions and bottom of the drier. p A steam-pipe, z, communicates with this chamber, passing back and forth longitudinally, as represented in Fig. 5, heating the air that passes up into the chambers of the drier. The steam-pipe may be placed transversely, orin any other direction that may be desired. yBelow the pipes is a perforated partition, H', forming a chamber, H, underneath, into which enters the pipe, 7c, that connects -with the fancase N. The rotary fan N in the case is operated by a pulley, r, on the end of its shaft, the pulley being connected by the belt r to the drivingpulley, Figs. 2 and 4. The fan-case is placed i so -that the pipe le enters the side of the chamber H about the middle, at lo', Fig. 5.A The rotating fan produces a constant current of air through this pipe into the chamber H, that passes .up through the perforated partition H', causing the heated air around the pipes to ascend into the drier, and pass off at the top, producing a continued current of heated air through the drier.

P, Figs. 1, 3, 4, and 6, represents an adjustableplatform, raised and lowered by means of a rack and pinion in each of the standards S and T, (indicated by the dotted lines P in Figs. 3 and 6.) The pinions in the two standards are connected by the shaft p, and turned by the crank pf, that raises and lowers the platform. The object of this adjustable pla-tin the box a.

form is to render it convenient to arrange the paper over the upper rollers, or for any other purpose, as may be required, access being gained to the inside of the drier at this side by means of the sliding doors b b', to each of which is connected a cord, weight, and pulleys to keep them in place and facilitate their movement.

t t, Figs. 1 and 3, are cords or ropes attached to each end of the lower door, b', that passes round the pulleys q q on the shaft g', to which a rope is attached that passes over a pulley, u, Figs. 2 and 5, in the opposite side of the drier, to the end of which is suspended a couni terbalance-weight in the box u'. The ropes attached to the upper door, b, pass over similar pulleys on the shaft d, to which is attached a rope that passes over the pulley h, Figs. 2 and 6, and suspends a counterbalance-weight l/Vith this arrangement of counterbalance-weights and pulleys, connected `with the doors, the doors are easily raised and lowered, and remain in any position in which they are placed. The prepared paper is passed into the drier over the roller M through the opening m', or the door m may be raised, and is guided under the roller m over the roller fn, `and so on round the roller L into the next chamber below, until it is conveyed throughall the chambers, and passes out over the roller N, as indicated by the red line in Fig. 5. The doors at the ends and sides render it easy to guide the paper at first through the chambers, or to adjust it if it breaks or gets out of order. The paper continuously passing over and under so many rollers is kept uniformly stretched, and is thus prevented, any part of it, from shrinking in the process of drying. The current of heated air from the steam-pipes passes up into the first chamber, under the paper, and as the partitions fit closely to the sides of the drier, the heated air must pass from along the under side of the paper round the edges, over the top of the paper, as indicated by the arrows in Fig. 6, up through the opening in the middle of the next partition, into the chamber above, and so on through all the chambers, until it passes ott' at the top. In this way the currents of heated air come in contact with both sides of the paper, drying it effectually and rapidly on each side. Many ditiiculties arise in drying sized paper. If it is brought immediately into a dry hot atmosphere after being sized, the sizing is apt to dry without sufficiently entering the paper, producing a cracked and rough surface, and if brought and continued in a moist atmosphere the sizing will be injured and the paper dried imperfectly. The paper should first be brought into a moist and heated atmosphere, until the sizing is absorbed, passing gradually into a drier and hotter, until it is carried out of the drier. It is necessary that there should be a free circulation of fresh hot air constantly through the drier, causing the moisture emitted from the paper to ascend and pass oi' at the top. It is evident from the arrangement of this drier. as also from its practical operation, that all these advantages are gained. The rotating fan causes a constant and uniform current of heated air through the drier. The steam generated in the chambers from the moist paper and hot air rises to the top, so that the damp sized paper first comes into a moist and heated atmosphere, which is continually passing off at the top, and as the sizing is sufficient] y absorbed,it passes gradually into a drier, as it is carried down through the chambers of the drier, coming in Contact constantly with currents of heated air, drying it in the most desirable and successful manner.

What we claim as our improvement, and desire to secure by Letters Patent, is-

1. The combination of partitions G, the openings d, and the adjustable parallels h, arranged and operated as herein set forth.

2. ln connection with a paper-drying machine, the adjustable platform F, rack and pinion P', shaft p, and crank p', when combined and operating as and for the purpose set forth and described.

3. The rotating fan N, in combination with the chamber H, perforated partition H', and chamber L. and steam-pipes z, all arranged ,and operated substanially as and for the purpose specified.

N. W. TAYLOR. J. W. BRIGHTMAN.

Witnesses W. H. BURRIDGE, A. W. MCCLELLAND. 

